pentagon correspondent barbara starr broke this story just a short time ago. barbara, what is the former cia director expected to say? >> well, kate and wolf. i have spoken to a source, a long-standing source of mine who is close to petraeus, someone who is not a junior aide. petraeus wants to go to the capitol hill and clear this up. that petraeus, as cia director, knew almost immediately, that's how the source characterizes it, that al qaeda sympathizer group in libya was behind the attack. but the confusion emerged very quickly, as well. because petraeus and the cia had about 20 different intelligence reports, we are told, that indicated it was due to that anti-islamic film back in cairo that had sparked the riots. so, what you have here are two questions on the table. who is responsible and what was their motivation? what we now understand is petraeus will tell the committee those 20 reports or so about the it being a spontaneous riot because people objected to the film. those reports were disproved over time. but not until after petraeus made that initial